Abstract
A method has been developed for continuous monitoring of the emission of volatiles from biological sources with high time resolution. High time resolution (up to 3 min) is achieved by an automatically operated, miniaturised gas chromatographic system equipped with a pre-concentration unit (zNoseTM). After calibration, the zNoseTM provides reliable quantitative data for individual compounds and allows their emission kinetics to be followed over longer periods of time without supervision. While the results of the zNoseTM provide information about actual composition of aromas during sampling, the analysis of simultaneously trapped volatiles supplies information about the total amount of emitted compounds and permits further spectroscopic analyses (Isotope-Ratio-MS, GC-MS, etc.). Both methods, analysis by the zNoseTM and sampling on charcoal traps, lead to comparable results. The new analytical system has been successfully used to study the kinetics of volatile emission from elicitor-treated Lima bean leaves (Phaseolus lunatus), aphid-damaged paprika plants (Capsicum annuum), and to follow the volatile emission from blossoms of the cactus Rebutia fabrisii over several days. The instrument is portable and can be used in the field.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
